Which term refers to the act of copying or reproducing data?

Which term refers to the act of copying or reproducing data?

• A. Replication
• B. Clustering
• C. Redundancy
• D. Load Balancing

Answer: (A)

Copying or reproducing data is called replication. Replication creates and maintains identical or updated copies of data across multiple systems or locations, so users can access up-to-date information even if one site becomes unavailable. It can be done in real time (synchronous) or with a slight delay (asynchronous), depending on how closely the copies need to stay in sync and how quickly you need failover to occur. This makes replication a cornerstone of high availability and disaster recovery, because it ensures a ready, current copy of data at a secondary location.

Clustering, in contrast, groups servers to handle the same workload and improve availability without necessarily duplicating data across sites. Redundancy refers to having extra copies or components to tolerate failures, which replication helps achieve by creating those extra data copies. Load balancing distributes incoming requests across multiple servers to improve performance and resilience, but it doesn’t focus on copying data itself.